Question

If X = 5/2 is a zero of the polynomial 2x²– Kx – 12, then find the value of k

Answer 1

Step-by-step explanation:

2x²– Kx – 12=0

2(5/2)²-k(5/2)-12=0

2×25/4- 5k/2 -12=0

25/2 -12= 5k/2

(25-24)/2= 5k/2

1/2=5k/2

1=5k

1/5=k

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